Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-89040— Tencent Mass Service Engine in Cluster (MSEC) path traversal

Quick assessment

Affected
Tencent Mass Service Engine in Cluster (MSEC)
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

腾讯集群版 Mass Service Engine（MSEC）存在漏洞，允许远程未认证的攻击者发送包含 的构造好的 POST 请求，从而在目标设备上获取 root 权限。上传 Webshell 的攻击者可以以 root 身份执行任意代码。

CVSS 9.8 · Critical

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-89040

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Tencent Mass Service Engine in Cluster (MSEC) path traversal
Source: CVE Program / CVE List V5
Vulnerability Description
Tencent Mass Service Engine in Cluster (MSEC) allows a remote, unauthenticated attacker to send a crafted POST request including ../ and gain root access on the target device. An attacker who uploads a webshell can execute arbitrary code as root.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Tencent Mass Service Engine in Cluster (MSEC) 0 ~ * -

II. Public POCs for CVE-2026-89040

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-89040

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-89040 (1)

Other References for CVE-2026-89040 (2)

IV. Related Vulnerabilities

Same vendor: Tencent
Same weakness: CWE-22

V. Comments for CVE-2026-89040

No comments yet

Leave a comment